Your question specifically asked about installing lame but not about grip ; grip is available in the normal Debian repository. BTW You can find whether this is the case for any package by going to
http://www.debian.org/distrib/packages
and entering the package name in the appropriate search field. N.B. Sometimes you may know only the command name that you are looking for, which is not always the same as the package name; for this use the "Search the contents of packages" field.

Code:
apt-get install grip
should get it for you.